package com.code.leetcode.idea;

import com.code.leetcode.idea.common.ListNode;

public class LeetCodeIdea002 {
    public static void main(String[] args) {
        ListNode l1 = ListNode.conListNode(new int[] {2,4,3});
        ListNode l2 = ListNode.conListNode(new int[] {5,6,4});
        LeetCodeIdea002 leetCodeIdea002 = new LeetCodeIdea002();
        ListNode node = leetCodeIdea002.addTwoNumbers(l1, l2);
        ListNode.printList(node);

    }
    public ListNode addTwoNumbers(ListNode l1, ListNode l2) {
        ListNode pre = new ListNode(0);
        ListNode cur = pre;
        int carry = 0;
        while (l1 != null || l2 != null) {
            int x = l1 == null ? 0 : l1.val;
            int y = l2 == null ? 0 : l2.val;
            int sum = x + y + carry;
            carry = sum / 10;
            sum = sum % 10;
            cur.next = new ListNode(sum);
            cur = cur.next;
            if (l1 != null) {
                l1 = l1.next;
            }
            if (l2 != null) {
                l2 = l2.next;
            }
        }

        if (carry == 1) {
            cur.next = new ListNode(carry);
        }
        return pre.next;
    }
}
